Q: What are the prime factors of the number 68,143,902?

 A: 2, 3, 53, 421, 509

Why are those the prime factors of the number 68,143,902?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 68,143,902

68,143,902
Factor Arrows
234,071,951
Factor Arrows
311,357,317
Factor Arrows
53214,289
Factor Arrows
421509

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 53, 421, 509

We can check our work by multiplying all of the prime factors together: 2 x 3 x 53 x 421 x 509 = 68,143,902

This can also be written as 21 x 31 x 531 x 4211 x 5091 = 68,143,902

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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